I would say yes based on the numbers you reached alone. You have gotten better results than anyone expected. On the trick flows- were they ported or anything? I had trick flows (170cc) and always wondered how they would perform on my big c.i. I sold them cuz I never thought they would flow enough.
Next question:
What would you have done to my basic combo na differently? Larger cam? I don't see why you wouldn't have hit well over 500rwhp using the same mindset with mine.
I have 414c.i., afr 205's, edel victor j intake, 80mm Accufab TB, LT 1 7/8 accufabs, 42# inj, .586 lift cam, PMS programmer.
If you really want lets take this to PM's so this thread can stay on topic. When you are ready to change up your combination let me know and I'll design you something you can be happy with.